Forceps head structure, biopsy forceps and endoscope kit
By designing an observable first avoidance port in the forceps head structure of the biopsy forceps, the problem of poor operating field of view when using the endoscopy is used, achieving more refined tissue collection and bleeding reduction effects.
Patent Information
- Application Number
- CN202421163615.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-27
AI Technical Summary
When used in conjunction with an endoscope, the existing biopsy forceps cannot be observed in real-time scenes in the forceps cup, resulting in poor operating field of view, and insufficient tissue collection or not collected tissue.
A clamp head structure is designed, including a clamp head seat and two clamp cups, wherein at least one clamp cup is rotatably mounted on the clamp head seat, and the opening and closing action of the clamp cup is realized by rotation, and a first avoidance port is provided at the joint position of the clamp cup, so that when the clamp head structure is closed, the acquisition cavity can be observed by the camera.
Through the design of the first avoidance port, the surgeon can observe the real-time scene in the clamp cup, obtain an excellent operating field, avoid insufficient collection amount or not collecting tissue, and reduce bleeding problems.
Smart Images
Figure CN222640518U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of medical devices, and in particular to a forceps head structure, a biopsy forceps and an endoscope kit. Background Art
[0002] With the rapid development of endoscopes and related technologies, endoscopic biopsy is an important means and basis for diagnosing lesions in the human body. In specific use, the biopsy forceps can be extended through the instrument channel of the endoscope to the far end of the endoscope to take tissue samples from the lesions in the human body, and then the endoscope can be withdrawn to remove the pathological tissue from the human body for slicing, pathological analysis and other operations.
[0003] In the related art, the head structure of the biopsy forceps includes two forceps cups arranged opposite to each other. The operator can operate at the proximal end of the biopsy forceps to control the opening and closing of the two forceps cups. When the forceps cups are closed, they can bite the tissue, thereby storing the tissue in the forceps head and realizing the collection. In practice, when the biopsy forceps of the related art are used in conjunction with an endoscope, the real-time scene in the forceps cups cannot be observed, resulting in a poor operating field of view, and often insufficient tissue collection or failure to collect tissue. Utility Model Content
[0004] The present application provides a forceps head structure, a biopsy forceps and an endoscope kit, which are used to at least solve the problem of poor operating field of the related biopsy forceps when collecting tissues.
[0005] In the first aspect, the embodiment of the present application provides a forceps head structure for biopsy forceps. The forceps head structure includes a forceps head seat and two forceps cups, wherein: at least one forceps cup is rotatably mounted on the forceps head seat, and the two forceps cups are arranged relative to each other to realize the opening and closing action between each other through rotation; the forceps head structure has a first avoidance opening, the first avoidance opening passes through the peripheral side wall of the forceps cup, and the axis of the first avoidance opening is inclined toward the proximal end of the forceps head structure, so as to observe the collection cavity formed by the forceps head structure when it is in a closed state.
[0006] In some embodiments, the clamp head structure includes a first avoidance opening corresponding to the joint between the clamp cups.
[0007] In some embodiments, the clamp cup has a first notch disposed at a joint portion thereof, and when the clamp head structure is in a closed state, the first notches of the two clamp cups are aligned to form a first avoidance opening.
[0008] In some embodiments, the clamp head seat has a receiving space arranged on its distal end surface, and the clamp cup has a second avoidance opening arranged on its proximal end. When the clamp head structure is in a closed state, the collection cavity is connected to the receiving space through the second avoidance opening.
[0009] In some embodiments, the forceps cup has a second notch disposed at its proximal end, and when the forceps head structure is in a closed state, the second notches of the two forceps cups are aligned to form a second avoidance opening.
[0010] In some embodiments, the clamp head structure also includes a connecting rod assembly and a traction rope. The connecting rod assembly is connected between the clamp cup and the traction rope to transmit the traction force of the traction rope to the clamp cup to achieve an opening and closing action. Along the direction from the distal end to the proximal end of the clamp head structure, the projection of the connecting rod assembly is located outside the inner cavity of the clamp cup.
[0011] In some embodiments, the clamp head seat has a mounting hole opened along its axial direction. Along the radial direction of the clamp head seat, the mounting hole and the receiving space are staggered, and the traction rope is passed through the mounting hole.
[0012] In some embodiments, in the two clamp cups, one of them has a first cutting portion at its joint portion, and the other has a second cutting portion at its joint portion. When the clamp head structure is in a closed state, the first cutting portion and the second cutting portion at least partially overlap each other.
[0013] In some embodiments, along the axial direction of the forceps head structure, the first avoidance opening is arranged close to the proximal end of the forceps cup.
[0014] In a second aspect, an embodiment of the present application provides a biopsy forceps, which includes a forceps head structure as described in the first aspect.
[0015] In a third aspect, an embodiment of the present application provides an endoscope kit, which includes an endoscope and a biopsy forceps as described in the second aspect, and the biopsy forceps can be plugged into an instrument channel of the endoscope.
[0016] The technical solution adopted in the embodiments of the present application can achieve the following beneficial effects:
[0017] In the clamp head structure disclosed in the embodiment of the present application, the axis of the first avoidance opening is inclined toward the proximal end of the clamp head structure, so that the first avoidance opening is located within the field of view of the camera of the endoscope. Light can be transmitted through the inclined first avoidance opening to avoid being blocked or interfered, thereby making it easier for the camera to obtain the situation inside the collection cavity, or to obtain a larger scene observation range.
[0018] Compared with the related art, when the biopsy forceps with the forceps head structure of the embodiment of the present application are used in conjunction with an endoscope, the operator can observe the real-time scene inside the forceps cup, thereby obtaining a better operating field of view. In this way, the operator can perform fine operations by observing the bite of the forceps cup on the pathological tissue, avoiding bleeding problems caused by insufficient bite and only relying on tearing to collect tissue. It is also convenient to determine the amount of tissue collected in the forceps head structure, avoiding the situation of insufficient collection volume and no tissue collected. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.
[0020] In the attached picture:
[0021] Figure 1 It is a schematic diagram of the structure of the clamp head structure disclosed in some embodiments of the present application when it is in an open state;
[0022] Figure 2 A schematic structural diagram of a clamp head structure disclosed in some embodiments of the present application when the clamp head structure is in an open state from another perspective;
[0023] Figure 3 It is a schematic diagram of the structure of the clamp head structure disclosed in some embodiments of the present application when it is in a closed state;
[0024] Figure 4 It is a schematic diagram of the structure of the clamp cup disclosed in some embodiments of the present application;
[0025] Figure 5 This is a cross-sectional view of the clamp head structure disclosed in some embodiments of the present application when it is in a closed state.
[0026] Description of reference numerals:
[0027] 100-clamp head seat, 110-accommodation space, 120-installation channel,
[0028] 200-clamp cup, 200a-inner cavity, 200b-first avoidance opening, 200b1-first notch, 200c-second avoidance opening, 200c1-second notch, 210-joining part, 220-first cutting part, 230-second cutting part,
[0029] 300-connecting rod assembly, 310-connecting rod, 400-traction rope. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.
[0031] In order to facilitate understanding of the forceps head structure, biopsy forceps and endoscope kit provided in the embodiments of the present application, the relevant technologies are first introduced in conjunction with application scenarios.
[0032] When using the relevant biopsy forceps in conjunction with an endoscope, it is often impossible to observe the real-time scene of the forceps cup, resulting in a poor operating field of vision, and insufficient tissue collection or no tissue collection often occurs.
[0033] After research, the inventors found that the above problems are mainly caused by the fact that the forceps cups of the related technology form a closed collection cavity after closing each other, and the collection of pathological tissue cannot be observed through the camera.
[0034] In view of this, some embodiments of the present application provide a forceps head structure for use in biopsy forceps.
[0035] See also Figure 1 to Figure 5 The clamp head structure disclosed in the embodiment of the present application includes a clamp head seat 100 and two clamp cups 200, wherein: at least one clamp cup 200 is rotatably mounted on the clamp head seat 100, and the two clamp cups 200 are arranged relatively to each other to realize the opening and closing action between each other through rotation; the clamp head structure has a first avoidance opening 200b, the first avoidance opening 200b passes through the peripheral side wall of the clamp cup 200, and the axis of the first avoidance opening 200b is inclined toward the proximal end of the clamp head structure, so as to observe the collection cavity formed when the clamp head structure is in a closed state.
[0036] The clamp head seat 100 is a basic component of the clamp head structure, which can support other components such as the clamp head seat 100. The clamp head seat 100 of the embodiment of the present application can be of various types. For example, the clamp head seat 100 can be integrally formed with the insertion portion of the biopsy forceps, and it belongs to the distal end of the insertion portion of the biopsy forceps; or, the clamp head structure and the insertion portion of the biopsy forceps are independent parts, and the clamp head seat 100 is also independently provided relative to the insertion portion of the biopsy forceps.
[0037] In the embodiment of the present application, both the two clamp cups 200 can be rotatably disposed on the clamp head seat 100 (see Figure 1 ), or one may be rotatably disposed on the clamp head seat 100 and the other may be fixed on the clamp head seat 100, as long as the relative movement of the two clamp cups 200 can be achieved. Specifically, when the two clamp cups 200 rotate toward each other, the two gradually approach and close together until the clamp head structure is switched to a closed state; when the two clamp cups 200 rotate away from each other, the two gradually move away from each other until the clamp head structure is switched to an open state. It can be seen that by driving the clamp cups 200 to rotate, the clamp head structure can be switched between a closed state and an open state.
[0038] An inner cavity 200 a is formed in the forceps cup 200 . When the forceps head structure is in a closed state, the inner cavities 200 a of the two forceps cups 200 are combined to form a collection cavity, which is used to receive the pathological tissue collected by the biopsy forceps.
[0039] At the same time, the forceps head structure of the embodiment of the present application has a first avoidance opening 200b that passes through the forceps cup 200, that is, the first avoidance opening 200b can connect the inside and outside of the forceps cup 200. Then, when the forceps head structure is in a closed state, the first avoidance opening 200b can connect the collection cavity with the outside. During the process of collecting tissue, external light can enter the collection cavity, thereby providing conditions for the camera at the far end of the endoscope to observe the tissue collection situation in the collection cavity.
[0040] In addition, since the axis of the first avoidance opening 200b is tilted toward the proximal end of the clamp head structure, and during the process of collecting tissue, the clamp head structure is extended to a position farther from the camera on the endoscope, that is, the camera is located close to the proximal end of the clamp head structure. In this way, the tilted first avoidance opening 200b can be located within the field of view of the camera, and light can be transmitted through the tilted first avoidance opening 200b to avoid being blocked or interfered, thereby making it easier for the camera to obtain the situation in the collection cavity, or obtain a larger scene observation range.
[0041] Compared with the related art, when the biopsy forceps with the forceps head structure of the embodiment of the present application are used in conjunction with an endoscope, the operator can observe the real-time scene inside the forceps cup 200, thereby obtaining a better operating field of view. In this way, the operator can perform fine operations by observing the bite of the forceps cup 200 on the pathological tissue, thereby avoiding bleeding problems caused by insufficient bite and only relying on tearing to collect tissue. At the same time, it is also convenient to determine the amount of tissue collected in the forceps head structure, thereby avoiding the situation where the collection amount is insufficient or no tissue is collected.
[0042] In an embodiment of the present application, there can be multiple orientation schemes of the first avoidance opening 200b in the inner cavity 200a of the forceps cup 200. For example, the first avoidance opening 200b can be oriented toward the distal end of the forceps head structure, that is, the joint 210 at the distal ends of the two forceps cups 200. Because most of the tissue usually enters the collection cavity through the distal side of the forceps head structure, such a layout can observe the condition of the tissue entering the collection cavity through the first avoidance opening 200b, which can facilitate judgment of whether the tissue collection is accurate and adjustment of the collection strategy; for example, the first avoidance opening 200b can also be oriented toward the joint 210 on the opposite side of the forceps cup 200.
[0043] In the embodiment of the present application, the cutter form of the joint portion 210 of the two clamp cups 200 is not limited. For example, the entire joint portion 210 of the clamp cups 200 may be provided with a cutter, or the like. Figure 1 to Figure 3 As shown, a cutter is provided at the joint portion 210 opposite to the first avoidance opening 200b on the forceps cup 200, so that it is convenient to observe the cutting of the tissue through the first avoidance opening 200b, and it is also beneficial to implement accurate tissue collection operations.
[0044] In some embodiments, the clamp head structure includes a first avoidance opening 200b corresponding to the joint portion 210 between the clamp cups 200. The joint portion 210 between the clamp cups 200 refers to the portion where the two clamp cups 200 contact each other when the clamp head structure is in a closed state, and also corresponds to the opening edge of the clamp cups 200.
[0045] It should be understood that when the biopsy forceps are used in conjunction with an endoscope, the biopsy forceps are usually rotated to a state where the opening and closing direction of the forceps head interface is perpendicular to the radial direction of the endoscope corresponding camera, so that the opening and closing action of the two forceps cups 200 can be observed through the camera, thereby facilitating the collection operation. In this example, since the first avoidance opening 200b is arranged corresponding to the joint portion 210 of the forceps cup 200, when the biopsy forceps are rotated to a state where the opening and closing direction of the forceps head interface is perpendicular to the radial direction of the endoscope corresponding camera, the first avoidance opening 200b is just within the viewing range below the camera, thereby facilitating the observation of the tissue collection situation in the collection cavity through the first avoidance opening 200b.
[0046] In the embodiment of the present application, the specific type of the first avoidance opening 200 b is not limited. For example, the first avoidance opening 200 b may be a through hole completely opened on the side wall of a clamp cup 200 , which may be disposed adjacent to the joint portion 210 of the corresponding clamp cup 200 .
[0047] In another embodiment, Figure 1 to Figure 4 As shown, the forceps cup 200 has a first notch 200b1 provided at its joint portion 210. When the forceps head structure is in a closed state, the first notches 200b1 of the two forceps cups 200 are aligned to form a first avoidance opening 200b. In such a layout, the first avoidance opening 200b is formed by combining the first notches 200b1 on the two forceps cups 200, that is, a part of the first avoidance opening 200b is located in one of the forceps cups 200, and the other part is located in the other forceps cup 200, which ensures that the first avoidance opening 200b is located exactly at the joint of the two forceps cups 200, so that when the biopsy forceps is rotated to a state where the opening and closing direction of the forceps head interface is perpendicular to the radial direction of the corresponding camera of the endoscope, the first avoidance opening 200b will be directly below the camera, further optimizing the effect of the camera observing the situation in the collection cavity through the first avoidance opening 200b.
[0048] In addition, precisely because the first avoidance opening 200b is composed of two first notches 200b1 distributed on the two forceps cups 200, and when the opening size of the first avoidance opening 200b is the same, the size of the hollowed-out area formed by opening the first notch 200b1 on a single forceps cup 200 will be smaller, thereby reducing the strength drop of the forceps cup 200 caused by the opening of the first avoidance opening 200b, which is beneficial for the forceps cup 200 to maintain a certain strength. Considering the squeezing effect that the biopsy forceps needs to pass through the human body cavity, it is equivalent to improving the damage resistance of the forceps head structure.
[0049] In some embodiments, Figure 1 to Figure 3 As shown, the clamp head seat 100 has a receiving space 110 arranged on its distal end surface, and the clamp cup 200 has a second avoidance opening 200c arranged on its proximal end. When the clamp head structure is in a closed state, the collection cavity is connected to the receiving space 110 through the second avoidance opening 200c.
[0050] It should be understood that since the biopsy forceps need to pass through the instrument channel of the endoscope insertion part and the human body cavity, their size is greatly limited, that is, the tissue collection capacity of the collection cavity formed by the two forceps cups 200 is limited. When the tissue collection capacity demand is large, the relevant forceps head structure cannot meet the demand, and may even crush the tissue due to the small space for placing the tissue, or require multiple collections.
[0051] In this example, the receiving space 110 of the clamp head seat 100 is connected to the collection cavity formed by the two clamp cups 200 through the second avoidance port 200c. In the process of controlling the clamp head structure to switch from an open state to a closed state, part of the tissue can enter the receiving space 110 of the clamp head seat 100 through the second avoidance port 200c, thereby increasing the space of the clamp head structure for placing pathological tissues, so that a large amount of tissue can be collected at one time, avoiding the situation of crushing tissues and multiple collection operations. Note that in this example, in addition to serving as a supporting structure for the clamp cups 200 and other components, the clamp head seat 100 also serves as a collection and receiving structure for tissues.
[0052] In the embodiment of the present application, the specific type of the first avoidance opening 200 b is not limited. For example, the second avoidance opening 200 c may be a through hole completely opened on a side wall of the clamp cup 200 .
[0053] In another embodiment, Figure 1 to Figure 4As shown, the forceps cup 200 has a second notch 200c1 at its proximal end. When the forceps head structure is in a closed state, the second notches 200c1 of the two forceps cups 200 are aligned to form a second avoidance opening 200c. In such a layout, the second avoidance opening 200c includes two parts respectively located at the proximal ends of the two forceps cups 200, so that it is ensured that the second avoidance opening 200c includes a part roughly distributed in the area where the central axis of the forceps head structure is located. When the amount of tissue collected is large, the tissue will preferentially enter the receiving space 110 of the forceps head seat 100 through the area of the second avoidance opening 200c corresponding to the central axis of the forceps head structure. Compared with the solution in which the second avoidance opening 200c is completely deviated from the central axis of the forceps head structure, it can avoid the situation in which the tissue is damaged due to pressure due to unilateral deflection.
[0054] Furthermore, the second notches 200c1 on the two forceps cups 200 can be symmetrically arranged along the seam of the two forceps cups 200, thereby ensuring that the second avoidance opening 200c formed by the two second notches 200c1 is arranged corresponding to the central axis of the forceps head structure, further avoiding the situation where the tissue is deflected and compressed during the process of entering the receiving space 110.
[0055] In some embodiments, Figure 1 to Figure 4 As shown, the pliers head structure also includes a connecting rod assembly 300 and a traction rope 400. The connecting rod assembly 300 is connected between the pliers cup 200 and the traction rope 400 to transmit the traction force of the traction rope 400 to the pliers cup 200 to realize the opening and closing action. Along the direction from the distal end to the proximal end of the pliers head structure, the projection of the connecting rod assembly 300 is located outside the inner cavity 200a of the pliers cup 200.
[0056] It should be understood that the biopsy forceps of related art usually arrange the connecting rod assembly 300 on the proximal side of the forceps cup 200, which causes the connecting rod assembly 300 to occupy a larger space between the forceps cup 200 and the forceps head seat 100, which will hinder the tissue in the collection cavity from entering the receiving space 110 of the forceps head seat 100.
[0057] In this example, the projection of the connecting rod assembly 300 along the direction from the distal end to the proximal end of the clamp head structure is arranged outside the inner cavity 200a of the clamp cup 200, so that the connecting rod assembly 300 does not overlap with the inner cavity 200a of the clamp cup 200 along the axial direction of the clamp head structure. In this way, when the clamp head structure is switched to a closed state, the connecting rod assembly 300 does not overlap with the collection cavity formed by the two clamp cups 200 along the axial direction of the clamp head structure, thereby ensuring that in the process of collecting more tissues and the tissues entering the receiving space 110 of the clamp head seat 100, the tissues will not be hindered by the interference of the connecting rod assembly 300, so that they can be smoothly sent into the receiving space 110 to complete the collection operation.
[0058] In the embodiments of the present application, the specific type of the connecting rod assembly 300 is not limited. For example, Figure 1 and Figure 2 As shown, the connecting rod assembly 300 is a double-link type, that is, one end of each connecting rod 310 is hinged to a clamp cup 200, and the other ends of the two connecting rods 310 are hinged to the distal end of the traction rope 400; of course, the connecting rod assembly 300 can also be a four-link type, a five-link type, etc.
[0059] In some embodiments, Figure 1 to Figure 4 As shown, the clamp head base 100 has a mounting hole 120 opened along its axial direction. Along the radial direction of the clamp head base 100, the mounting hole 120 and the receiving space 110 are staggered, and the traction rope 400 is passed through the mounting hole 120. Under such a layout, the mounting hole 120 is not correspondingly arranged in the receiving space 110, that is, the traction rope 400 will not pass through the receiving space 110, and the traction rope 400 will not be distributed on the route of the tissue entering the receiving space 110, thereby avoiding the traction rope 400 from interfering with the tissue entering the receiving space 110.
[0060] In some embodiments, Figure 1 , Figure 2 and Figure 5 As shown, in the two forceps cups 200, the joint portion 210 of one is provided with a first cutting portion 220, and the joint portion 210 of the other is provided with a second cutting portion 230. When the forceps head structure is in a closed state, the first cutting portion 220 and the second cutting portion 230 at least partially overlap each other.
[0061] It should be understood that in the forceps head structure of the related art, the cutting edges provided on the opening edges of the two forceps cups 200 are usually used to bite the tissue, and then the tissue is cut by squeezing the tissue. However, this method often fails to effectively cut the tissue. Instead, the tissue can only be collected by tearing the tissue during the process of withdrawing the biopsy forceps. However, this will cause obvious bleeding in the corresponding tissue, leaving a large wound in the patient's body.
[0062] In this example, both the first cutter portion 220 and the second cutter portion 230 have cutting edges, so when the two forceps cups 200 approach each other, the tissue between the two forceps cups 200 will also be cut by the cutting edges of the two cutter portions (i.e., the first cutter portion 220 and the second cutter portion 230) to cut the tissue. At the same time, when the two forceps cups 200 approach each other until the clamp head structure is in a closed state, the first cutter portion 220 and the second cutter portion 230 gradually overlap and overlap, and the tissue between the two cutter portions will be subjected to the lateral external force applied by the cutting edges of the corresponding cutter portions, causing the tissue to produce a dislocation deformation trend corresponding to the bending path at the joint of the two cutter portions. Obviously, in this example, the tissue will be subjected to additional shearing force when collecting the tissue, which makes it easier to cut the tissue, thereby ensuring that the tissue collection can be completed by controlling the clamp head structure to switch to a closed state, thus avoiding the problem of tearing the tissue.
[0063] In some embodiments, Figure 1 and Figure 3 As shown, along the axial direction of the clamp head structure, the first avoidance opening 200b is arranged near the proximal end of the clamp cup 200. It should be understood that because the first avoidance opening 200b is arranged obliquely toward the proximal end of the clamp head structure, the side of the first avoidance opening 200b close to the inner cavity 200a of the clamp cup 200 is relatively closer to the distal end of the clamp head structure. The layout of this example makes the side of the first avoidance opening 200b close to the inner cavity 200a of the clamp cup 200 also closer to the proximal end of the clamp head structure, which can increase the viewing range in the collection cavity through the first avoidance opening 200b.
[0064] See also Figure 1 to Figure 5 Some embodiments of the present application provide a biopsy forceps, which includes the forceps head structure mentioned in any of the above schemes. Thus, the biopsy forceps of the embodiments of the present application have the beneficial effects of the above forceps head structure, which will not be described in detail here.
[0065] See also Figure 1 to Figure 5 Some embodiments of the present application provide an endoscope kit, which includes an endoscope and the biopsy forceps of the above solution, wherein the biopsy forceps can be plugged into the instrument channel of the endoscope. In this way, the endoscope kit of the embodiment of the present application has the beneficial effects of the above biopsy forceps, which will not be repeated.
[0066] The instrument channel refers to an instrument channel in the insertion portion of the endoscope for inserting tissue instruments.
[0067] The endoscope involved in the embodiments of the present application may be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a rhinoscope, a stomatoscope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not impose any specific restrictions on the type of endoscope.
[0068] The above embodiments of the present application focus on describing the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.
[0069] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims
1. A forceps head structure, used for biopsy forceps, characterized in that: The clamp head structure comprises a clamp head seat and two clamp cups, wherein: At least one of the clamp cups is rotatably mounted on the clamp head seat, and two of the clamp cups are arranged opposite to each other to realize opening and closing actions by rotation; The clamp head structure has a first avoidance opening, which passes through the peripheral side wall of the clamp cup, and the axis of the first avoidance opening is inclined toward the proximal end of the clamp head structure to observe the collection cavity formed by the clamp head structure when it is in a closed state.
2. The clamp head structure according to claim 1, characterized in that: The clamp head structure includes the first avoidance opening corresponding to the joint portion between the clamp cups.
3. The clamp head structure according to claim 2, characterized in that: The clamp cup has a first notch arranged at the joint portion thereof. When the clamp head structure is in a closed state, the first notches of the two clamp cups are matched to form the first avoidance opening.
4. The clamp head structure according to claim 1, characterized in that: The clamp head seat has a receiving space arranged on its distal end surface, and the clamp cup has a second avoidance opening arranged on its proximal end. When the clamp head structure is in a closed state, the collection cavity is correspondingly connected to the receiving space through the second avoidance opening.
5. The clamp head structure according to claim 4, characterized in that: The forceps cup has a second notch arranged at its proximal end. When the forceps head structure is in a closed state, the second notches of the two forceps cups are matched to form the second avoidance opening.
6. The clamp head structure according to claim 4, characterized in that: The clamp head structure also includes a connecting rod assembly and a traction rope. The connecting rod assembly is connected between the clamp cup and the traction rope to transmit the traction force of the traction rope to the clamp cup to achieve the opening and closing action. Along the direction from the distal end to the proximal end of the clamp head structure, the projection of the connecting rod assembly is located outside the inner cavity of the clamp cup.
7. The clamp head structure according to claim 6, characterized in that: The clamp head seat has a mounting hole opened along its axial direction. Along the radial direction of the clamp head seat, the mounting hole and the accommodating space are arranged in a staggered manner, and the traction rope is passed through the mounting hole.
8. The clamp head structure according to any one of claims 1 to 7, characterized in that: In the two clamp cups, a first cutting portion is provided at a joint portion of one of them, and a second cutting portion is provided at a joint portion of the other one, and when the clamp head structure is in a closed state, the first cutting portion and the second cutting portion at least partially overlap each other; And / or, along the axial direction of the forceps head structure, the first avoidance opening is arranged close to the proximal end of the forceps cup.
9. A biopsy forceps, characterized in that: The invention comprises the pliers head structure according to any one of claims 1 to 8.
10. An endoscope kit, characterized in that: The invention comprises an endoscope and the biopsy forceps according to claim 9, wherein the biopsy forceps can be plugged into and matched with the instrument channel of the endoscope.